#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>

using namespace std;

int main()
{
    string s, b;
    getline(cin, s);
    for (int i = 0; i < s.size(); i++)
    {
        if (s[i] >= 'a' && s[i] <= 'z')
            b += (char)((s[i] - 'a' + 1) % 26 + 'a');
        else if (s[i] >= 'A' && s[i] <= 'Z')
            b += (char)((s[i] - 'A' + 1) % 26 + 'A');
        else
            b += s[i];
    }
    cout << b << endl;
    return 0;
}
